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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
Employee Benefit Plans
14. Employee Benefit Plans

Retirement Plans

The Company offers defined contribution retirement plans which cover the majority of its U.S. employees, as well as employees in certain other countries. In addition, the Company sponsors qualified defined benefit pension plans covering certain employees of the Company and its subsidiaries. The plans’ benefits are generally based on years of service and employee compensation. The Company also provides to certain management employees, through non-qualified plans, supplemental retirement benefits in excess of qualified plan limits imposed by federal tax law.

The following tables set forth the components of the Company’s net periodic expense relating to retirement benefit plans:

Qualified Defined Benefits
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
U.S. Plan
 
Non-U.S. Plans
 
U.S. Plan
 
Non-U.S. Plans
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Service Cost
$
3,916

 
$
3,721

 
$
1,663

 
$
1,530

 
$
7,831

 
$
7,442

 
$
3,351

 
$
3,045

Interest Cost
5,791

 
6,315

 
1,476

 
2,023

 
11,582

 
12,629

 
2,962

 
4,006

Expected return on plan assets
(10,393
)
 
(10,399
)
 
(2,011
)
 
(2,082
)
 
(20,786
)
 
(20,797
)
 
(4,030
)
 
(4,111
)
Amortization:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Prior service cost
224

 
270

 
22

 
27

 
448

 
541

 
45

 
54

Recognized actuarial loss
3,155

 
2,072

 
661

 
222

 
6,310

 
4,144

 
1,336

 
443

Transition obligation
—

 
—

 
9

 
2

 
—

 
—

 
18

 
2

Settlement loss
—

 
—

 
—

 
—

 
—

 
—

 
—

 
3

Curtailments, special termination benefits, and settlements (1)
—

 
—

 
1

 
—

 
810

 
—

 
3

 
—

Net periodic expense
$
2,693

 
$
1,979

 
$
1,821

 
$
1,722

 
$
6,195

 
$
3,959

 
$
3,685

 
$
3,442


(1)
One-time charges of $810 reflected in pension expense for the six months ended June 30, 2015 represents curtailments, special termination benefits, and settlements for certain businesses classified as held for sale; therefore, this amount has been reflected in the results of discontinued operations.

The net periodic expense reflected above for non-U.S. plans for the six months ended June 30, 2014 excludes certain non-U.S. plans sponsored by Knowles that were distributed as part of the separation on February 28, 2014. The historical expense relating to these plans was not significant for the six months ended June 30, 2014. The expense relating to these plans is reflected in earnings from discontinued operations.

Non-Qualified Supplemental Benefits
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
Service Cost
$
935

 
$
830

 
$
1,870

 
$
1,660

Interest Cost
1,265

 
1,537

 
2,531

 
3,074

Amortization:
 
 
 
 
 
 
 
   Prior service cost
1,732

 
1,943

 
3,464

 
3,887

   Recognized actuarial loss (gain)
72

 
(106
)
 
143

 
(213
)
Net periodic expense
$
4,004

 
$
4,204

 
$
8,008

 
$
8,408



Post-Retirement Plans

The Company also maintains post retirement benefit plans, although these plans are effectively closed to new entrants. The supplemental and post retirement benefit plans are supported by the general assets of the Company. The following table sets forth the components of the Company’s net periodic expense relating to its post-retirement benefit plans:

 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
Service Cost
$
40

 
$
62

 
$
81

 
$
124

Interest Cost
128

 
157

 
256

 
314

Amortization:
 
 
 
 
 
 
 
   Prior service cost
(93
)
 
(102
)
 
(186
)
 
(204
)
   Recognized actuarial (gain) loss
(7
)
 
13

 
(15
)
 
26

Net periodic expense
$
68

 
$
130

 
$
136

 
$
260



The total amount amortized out of accumulated other comprehensive income into net periodic benefit expense totaled $5,775 and $4,341for the three months ended June 30, 2015 and 2014, respectively, and $11,563 and $8,680 for the six months months ended June 30, 2015 and 2014, respectively. The amortization included in other comprehensive income for the six months ended June 30, 2014 includes insignificant amounts related to plans sponsored by Knowles that were transfered as part of the separation in 2014.

Defined Contribution Retirement Plans

The Company also offers defined contribution retirement plans which cover the majority of its U.S. employees, as well as employees in certain other countries. The Company’s expense relating to defined contribution plans was $8,005, and $8,865 for the three months ended June 30, 2015 and 2014, respectively, and $17,011 and $17,242 for the six months ended June 30, 2015 and 2014.